diff -Naurp0 a/Makefile b/Makefile
--- a/Makefile	2018-09-17 01:42:50.000000000 +0600
+++ b/Makefile	2019-07-29 17:36:09.563110157 +0600
@@ -1 +1 @@
-PREFIX ?= /usr/local
+PREFIX ?= /usr
